/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.tez.dag;


import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.tez.dag.api.Edge;
import org.apache.tez.dag.api.TezConfiguration;

public abstract class FlinkEdge {

	protected FlinkVertex source;
	protected FlinkVertex target;
	protected TypeSerializer<?> typeSerializer;
	protected Edge cached;

	protected FlinkEdge(FlinkVertex source, FlinkVertex target, TypeSerializer<?> typeSerializer) {
		this.source = source;
		this.target = target;
		this.typeSerializer = typeSerializer;
	}

	public abstract Edge createEdge(TezConfiguration tezConf);

	public Edge getEdge () {
		return cached;
	}

}
